The Windows Phone camp is gearing up for the Kentucky Derby and they are putting their money on the only white horse racing, Hansen. To celebrate, they created a pretty cool twitter contest. Read below on how to enter for your chance to win a white Lumia 900.

To celebrate the Derby, we’re also launching a Twitter contest today and giving away two new white (natch) Lumia 900s. To enter, you’ll need to follow @WindowsPhone, then send us a tweet using the hashtag #TrifectaTweet with the horses you think will win, place, and show in the Derby (that’s first, second, and third place, by the way.) The contest ends Saturday at 5 p.m. Pacific, and you must be a U.S. resident 18 or over to enter. See the official sweepstakes rules for all the details.

NBC kicks off its Derby coverage at 5 p.m. Eastern time. Post time is 6:24 p.m. Eastern. See kentuckyderby.com for more info.